Patents by Inventor Daisuke Hironaka

Daisuke Hironaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240254687
    Abstract: Provided is artificial leather that combines good texture, high wear resistance, and a high-quality appearance without the addition of polyurethane resin. Artificial leather that includes at least a surface fiber layer constituting a first surface, the artificial leather being characterized by the following: the surface fiber layer includes main fibers and a thermoplastic resin; the main fibers have a fineness of 0.01 dtex to 0.
    Type: Application
    Filed: May 20, 2022
    Publication date: August 1, 2024
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Hidehiro Yamaguchi, Mitsuaki Matsumoto, Masato Rikitake, Yusuke Watanabe, Daisuke Hironaka, Yoshiyuki Tadokoro, Aguru Yamamoto, Yoko Fujimoto, Hidemi Ito
  • Publication number: 20220372698
    Abstract: Provided is an artificial leather that has texture (stiffness), a luxuriant feel (dispersibility of fiber bundles), and a slick feel (resin clusters of appropriate size) and can be used suitably as a seat cover material or interior design material for interiors, cars, airplanes, railway cars, etc. and garment accessory products.
    Type: Application
    Filed: October 27, 2020
    Publication date: November 24, 2022
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Daisuke Hironaka, Yoshiyuki Tadokoro, Keiichiro Sakata, Masaya Kawasaki, Aguru Yamamoto, Hisaki Ikebata
  • Publication number: 20210180247
    Abstract: An artificial leather is provided that, due to excellent texture and mechanical strength (abrasion resistance, etc.), can be appropriately used in, for example, clothing products, or sheets of skin material or interior material, etc. for interiors, automobiles, airplanes, rail cars, etc. One embodiment of the present invention is an artificial leather that includes a fiber sheet and a polyurethane resin, wherein the fiber sheet includes a scrim that is a woven or knitted fabric, and a fiber layer (A) that constitutes a first outer surface of the artificial leather, such that in a thickness direction cross-section of the fiber layer (A), the ratio (d/D) of the total area (d) of the polyurethane resin that forms a closed shape having an area of 100 ?m2 or more to the total area (D) of the polyurethane resin satisfies the following formula (1): 5?(d/D)×100?50 (%).
    Type: Application
    Filed: August 5, 2019
    Publication date: June 17, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Daisuke Hironaka, Yoshiyuki Tadokoro, Keiichiro Sakata, Hiroki Umemoto